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<?php
/**
 * Zend Framework
 *
 * LICENSE
 *
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 *
 * @category   Zend
 * @package    Zend_Db
 * @subpackage Adapter
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */

/**
 * @see Zend_Loader
 */
require_once 'Zend/Loader.php';

/**
 * @see Zend_Db_Adapter_Abstract
 */
require_once 'Zend/Db/Adapter/Abstract.php';

/**
 * @see Zend_Db_Statement_Oracle
 */
require_once 'Zend/Db/Statement/Oracle.php';

/**
 * @category   Zend
 * @package    Zend_Db
 * @subpackage Adapter
 * @copyright  Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
 * @license    http://framework.zend.com/license/new-bsd     New BSD License
 */
class Zend_Db_Adapter_Oracle extends Zend_Db_Adapter_Abstract
{
    /**
     * User-provided configuration.
     *
     * Basic keys are:
     *
     * username => (string) Connect to the database as this username.
     * password => (string) Password associated with the username.
     * dbname   => Either the name of the local Oracle instance, or the
     *             name of the entry in tnsnames.ora to which you want to connect.
     *
     * @var array
     */
    protected $_config = array(
        'dbname'       => null,
        'username'     => null,
        'password'     => null,
    );

/**
     * Keys are UPPERCASE SQL datatypes or the constants
     * Zend_Db::INT_TYPE, Zend_Db::BIGINT_TYPE, or Zend_Db::FLOAT_TYPE.
     *
     * Values are:
     * 0 = 32-bit integer
     * 1 = 64-bit integer
     * 2 = float or decimal
     *
     * @var array Associative array of datatypes to values 0, 1, or 2.
     */
    protected $_numericDataTypes = array(
        Zend_Db::INT_TYPE    => Zend_Db::INT_TYPE,
        Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE,
        Zend_Db::FLOAT_TYPE  => Zend_Db::FLOAT_TYPE,
        'BINARY_DOUBLE'      => Zend_Db::FLOAT_TYPE,
        'BINARY_FLOAT'       => Zend_Db::FLOAT_TYPE,
        'NUMBER'             => Zend_Db::FLOAT_TYPE,
    );

/**
     * @var integer
     */
    protected $_execute_mode = OCI_COMMIT_ON_SUCCESS;

/**
     * Default class name for a DB statement.
     *
     * @var string
     */
    protected $_defaultStmtClass = 'Zend_Db_Statement_Oracle';

/**
     * Check if LOB field are returned as string
     * instead of OCI-Lob object
     *
     * @var boolean
     */
    protected $_lobAsString = null;

/**
     * Creates a connection resource.
     *
     * @return void
     * @throws Zend_Db_Adapter_Oracle_Exception
     */
    protected function _connect()
    {
        if (is_resource($this->_connection)) {
            // connection already exists
            return;
        }

if (!extension_loaded('oci8')) {
            /**
             * @see Zend_Db_Adapter_Oracle_Exception
             */
            require_once 'Zend/Db/Adapter/Oracle/Exception.php';
            throw new Zend_Db_Adapter_Oracle_Exception('The OCI8 extension is required for this adapter but the extension is not loaded');
        }

if (isset($this->_config['dbname'])) {
            $this->_connection = @oci_connect(
                $this->_config['username'],
                $this->_config['password'],
                $this->_config['dbname']);
        } else {
            $this->_connection = oci_connect(
                $this->_config['username'],
                $this->_config['password']);
        }

// check the connection
        if (!$this->_connection) {
            /**
             * @see Zend_Db_Adapter_Oracle_Exception
             */
            require_once 'Zend/Db/Adapter/Oracle/Exception.php';
            throw new Zend_Db_Adapter_Oracle_Exception(oci_error());
        }
    }

/**
     * Test if a connection is active
     *
     * @return boolean
     */
    public function isConnected()
    {
        return ((bool) (is_resource($this->_connection)
                     && get_resource_type($this->_connection) == 'oci8 connection'));
    }

/**
     * Force the connection to close.
     *
     * @return void
     */
    public function closeConnection()
    {
        if ($this->isConnected()) {
            oci_close($this->_connection);
        }
        $this->_connection = null;
    }

/**
     * Activate/deactivate return of LOB as string
     *
     * @param string $lob_as_string
     * @return Zend_Db_Adapter_Oracle
     */
    public function setLobAsString($lobAsString)
    {
        $this->_lobAsString = (bool) $lobAsString;
        return $this;
    }

/**
     * Return whether or not LOB are returned as string
     *
     * @return boolean
     */
    public function getLobAsString()
    {
        if ($this->_lobAsString === null) {
            // if never set by user, we use driver option if it exists otherwise false
            if (isset($this->_config['driver_options']) &&
                isset($this->_config['driver_options']['lob_as_string'])) {
                $this->_lobAsString = (bool) $this->_config['driver_options']['lob_as_string'];
            } else {
                $this->_lobAsString = false;
            }
        }
        return $this->_lobAsString;
    }

/**
     * Returns an SQL statement for preparation.
     *
     * @param string $sql The SQL statement with placeholders.
     * @return Zend_Db_Statement_Oracle
     */
    public function prepare($sql)
    {
        $this->_connect();
        $stmtClass = $this->_defaultStmtClass;
        Zend_Loader::loadClass($stmtClass);
        $stmt = new $stmtClass($this, $sql);
        if ($stmt instanceof Zend_Db_Statement_Oracle) {
            $stmt->setLobAsString($this->getLobAsString());
        }
        $stmt->setFetchMode($this->_fetchMode);
        return $stmt;
    }

/**
     * Quote a raw string.
     *
     * @param string $value     Raw string
     * @return string           Quoted string
     */
    protected function _quote($value)
    {
        if (is_int($value) || is_float($value)) {
            return $value;
        }
        $value = str_replace("'", "''", $value);
        return "'" . addcslashes($value, "\000\n\r\\\032") . "'";
    }

/**
     * Quote a table identifier and alias.
     *
     * @param string|array|Zend_Db_Expr $ident The identifier or expression.
     * @param string $alias An alias for the table.
     * @param boolean $auto If true, heed the AUTO_QUOTE_IDENTIFIERS config option.
     * @return string The quoted identifier and alias.
     */
    public function quoteTableAs($ident, $alias = null, $auto = false)
    {
        // Oracle doesn't allow the 'AS' keyword between the table identifier/expression and alias.
        return $this->_quoteIdentifierAs($ident, $alias, $auto, ' ');
    }

/**
     * Return the most recent value from the specified sequence in the database.
     * This is supported only on RDBMS brands that support sequences
     * (e.g. Oracle, PostgreSQL, DB2).  Other RDBMS brands return null.
     *
     * @param string $sequenceName
     * @return string
     */
    public function lastSequenceId($sequenceName)
    {
        $this->_connect();
        $sql = 'SELECT '.$this->quoteIdentifier($sequenceName, true).'.CURRVAL FROM dual';
        $value = $this->fetchOne($sql);
        return $value;
    }

/**
     * Generate a new value from the specified sequence in the database, and return it.
     * This is supported only on RDBMS brands that support sequences
     * (e.g. Oracle, PostgreSQL, DB2).  Other RDBMS brands return null.
     *
     * @param string $sequenceName
     * @return string
     */
    public function nextSequenceId($sequenceName)
    {
        $this->_connect();
        $sql = 'SELECT '.$this->quoteIdentifier($sequenceName, true).'.NEXTVAL FROM dual';
        $value = $this->fetchOne($sql);
        return $value;
    }

/**
     * Gets the last ID generated automatically by an IDENTITY/AUTOINCREMENT column.
     *
     * As a convention, on RDBMS brands that support sequences
     * (e.g. Oracle, PostgreSQL, DB2), this method forms the name of a sequence
     * from the arguments and returns the last id generated by that sequence.
     * On RDBMS brands that support IDENTITY/AUTOINCREMENT columns, this method
     * returns the last value generated for such a column, and the table name
     * argument is disregarded.
     *
     * Oracle does not support IDENTITY columns, so if the sequence is not
     * specified, this method returns null.
     *
     * @param string $tableName   OPTIONAL Name of table.
     * @param string $primaryKey  OPTIONAL Name of primary key column.
     * @return string
     */
    public function lastInsertId($tableName = null, $primaryKey = null)
    {
        if ($tableName !== null) {
            $sequenceName = $tableName;
            if ($primaryKey) {
                $sequenceName .= "_$primaryKey";
            }
            $sequenceName .= '_seq';
            return $this->lastSequenceId($sequenceName);
        }

// No support for IDENTITY columns; return null
        return null;
    }

/**
     * Returns a list of the tables in the database.
     *
     * @return array
     */
    public function listTables()
    {
        $this->_connect();
        $data = $this->fetchCol('SELECT table_name FROM all_tables');
        return $data;
    }

/**
     * Returns the column descriptions for a table.
     *
     * The return value is an associative array keyed by the column name,
     * as returned by the RDBMS.
     *
     * The value of each array element is an associative array
     * with the following keys:
     *
     * SCHEMA_NAME      => string; name of schema
     * TABLE_NAME       => string;
     * COLUMN_NAME      => string; column name
     * COLUMN_POSITION  => number; ordinal position of column in table
     * DATA_TYPE        => string; SQL datatype name of column
     * DEFAULT          => string; default expression of column, null if none
     * NULLABLE         => boolean; true if column can have nulls
     * LENGTH           => number; length of CHAR/VARCHAR
     * SCALE            => number; scale of NUMERIC/DECIMAL
     * PRECISION        => number; precision of NUMERIC/DECIMAL
     * UNSIGNED         => boolean; unsigned property of an integer type
     * PRIMARY          => boolean; true if column is part of the primary key
     * PRIMARY_POSITION => integer; position of column in primary key
     * IDENTITY         => integer; true if column is auto-generated with unique values
     *
     * @todo Discover integer unsigned property.
     *
     * @param string $tableName
     * @param string $schemaName OPTIONAL
     * @return array
     */
    public function describeTable($tableName, $schemaName = null)
    {
        $version = $this->getServerVersion();
        if (is_null($version) || version_compare($version, '9.0.0', '>=')) {
            $sql = "SELECT TC.TABLE_NAME, TC.OWNER, TC.COLUMN_NAME, TC.DATA_TYPE,
                    TC.DATA_DEFAULT, TC.NULLABLE, TC.COLUMN_ID, TC.DATA_LENGTH,
                    TC.DATA_SCALE, TC.DATA_PRECISION, C.CONSTRAINT_TYPE, CC.POSITION
                FROM ALL_TAB_COLUMNS TC
                LEFT JOIN (ALL_CONS_COLUMNS CC JOIN ALL_CONSTRAINTS C
                    ON (CC.CONSTRAINT_NAME = C.CONSTRAINT_NAME AND CC.TABLE_NAME = C.TABLE_NAME AND C.CONSTRAINT_TYPE = 'P'))
                  ON TC.TABLE_NAME = CC.TABLE_NAME AND TC.COLUMN_NAME = CC.COLUMN_NAME
                WHERE UPPER(TC.TABLE_NAME) = UPPER(:TBNAME)";
            $bind[':TBNAME'] = $tableName;
            if ($schemaName) {
                $sql .= ' AND UPPER(TC.OWNER) = UPPER(:SCNAME)';
                $bind[':SCNAME'] = $schemaName;
            }
            $sql .= ' ORDER BY TC.COLUMN_ID';
        } else {
            $subSql="SELECT AC.OWNER, AC.TABLE_NAME, ACC.COLUMN_NAME, AC.CONSTRAINT_TYPE, ACC.POSITION
                from ALL_CONSTRAINTS AC, ALL_CONS_COLUMNS ACC
                  WHERE ACC.CONSTRAINT_NAME = AC.CONSTRAINT_NAME
                    AND ACC.TABLE_NAME = AC.TABLE_NAME
                    AND ACC.OWNER = AC.OWNER
                    AND AC.CONSTRAINT_TYPE = 'P'
                    AND UPPER(AC.TABLE_NAME) = UPPER(:TBNAME)";
            $bind[':TBNAME'] = $tableName;
            if ($schemaName) {
                $subSql .= ' AND UPPER(ACC.OWNER) = UPPER(:SCNAME)';
                $bind[':SCNAME'] = $schemaName;
            }
            $sql="SELECT TC.TABLE_NAME, TC.OWNER, TC.COLUMN_NAME, TC.DATA_TYPE,
                    TC.DATA_DEFAULT, TC.NULLABLE, TC.COLUMN_ID, TC.DATA_LENGTH,
                    TC.DATA_SCALE, TC.DATA_PRECISION, CC.CONSTRAINT_TYPE, CC.POSITION
                FROM ALL_TAB_COLUMNS TC, ($subSql) CC
                WHERE UPPER(TC.TABLE_NAME) = UPPER(:TBNAME)
                  AND TC.OWNER = CC.OWNER(+) AND TC.TABLE_NAME = CC.TABLE_NAME(+) AND TC.COLUMN_NAME = CC.COLUMN_NAME(+)";
            if ($schemaName) {
                $sql .= ' AND UPPER(TC.OWNER) = UPPER(:SCNAME)';
            }
            $sql .= ' ORDER BY TC.COLUMN_ID';
        }

$stmt = $this->query($sql, $bind);

/**
         * Use FETCH_NUM so we are not dependent on the CASE attribute of the PDO connection
         */
        $result = $stmt->fetchAll(Zend_Db::FETCH_NUM);

$table_name      = 0;
        $owner           = 1;
        $column_name     = 2;
        $data_type       = 3;
        $data_default    = 4;
        $nullable        = 5;
        $column_id       = 6;
        $data_length     = 7;
        $data_scale      = 8;
        $data_precision  = 9;
        $constraint_type = 10;
        $position        = 11;

$desc = array();
        foreach ($result as $key => $row) {
            list ($primary, $primaryPosition, $identity) = array(false, null, false);
            if ($row[$constraint_type] == 'P') {
                $primary = true;
                $primaryPosition = $row[$position];
                /**
                 * Oracle does not support auto-increment keys.
                 */
                $identity = false;
            }
            $desc[$this->foldCase($row[$column_name])] = array(
                'SCHEMA_NAME'      => $this->foldCase($row[$owner]),
                'TABLE_NAME'       => $this->foldCase($row[$table_name]),
                'COLUMN_NAME'      => $this->foldCase($row[$column_name]),
                'COLUMN_POSITION'  => $row[$column_id],
                'DATA_TYPE'        => $row[$data_type],
                'DEFAULT'          => $row[$data_default],
                'NULLABLE'         => (bool) ($row[$nullable] == 'Y'),
                'LENGTH'           => $row[$data_length],
                'SCALE'            => $row[$data_scale],
                'PRECISION'        => $row[$data_precision],
                'UNSIGNED'         => null, // @todo
                'PRIMARY'          => $primary,
                'PRIMARY_POSITION' => $primaryPosition,
                'IDENTITY'         => $identity
            );
        }
        return $desc;
    }

/**
     * Leave autocommit mode and begin a transaction.
     *
     * @return void
     */
    protected function _beginTransaction()
    {
        $this->_setExecuteMode(OCI_DEFAULT);
    }

/**
     * Commit a transaction and return to autocommit mode.
     *
     * @return void
     * @throws Zend_Db_Adapter_Oracle_Exception
     */
    protected function _commit()
    {
        if (!oci_commit($this->_connection)) {
            /**
             * @see Zend_Db_Adapter_Oracle_Exception
             */
            require_once 'Zend/Db/Adapter/Oracle/Exception.php';
            throw new Zend_Db_Adapter_Oracle_Exception(oci_error($this->_connection));
        }
        $this->_setExecuteMode(OCI_COMMIT_ON_SUCCESS);
    }

/**
     * Roll back a transaction and return to autocommit mode.
     *
     * @return void
     * @throws Zend_Db_Adapter_Oracle_Exception
     */
    protected function _rollBack()
    {
        if (!oci_rollback($this->_connection)) {
            /**
             * @see Zend_Db_Adapter_Oracle_Exception
             */
            require_once 'Zend/Db/Adapter/Oracle/Exception.php';
            throw new Zend_Db_Adapter_Oracle_Exception(oci_error($this->_connection));
        }
        $this->_setExecuteMode(OCI_COMMIT_ON_SUCCESS);
    }

/**
     * Set the fetch mode.
     *
     * @todo Support FETCH_CLASS and FETCH_INTO.
     *
     * @param integer $mode A fetch mode.
     * @return void
     * @throws Zend_Db_Adapter_Oracle_Exception
     */
    public function setFetchMode($mode)
    {
        switch ($mode) {
            case Zend_Db::FETCH_NUM:   // seq array
            case Zend_Db::FETCH_ASSOC: // assoc array
            case Zend_Db::FETCH_BOTH:  // seq+assoc array
            case Zend_Db::FETCH_OBJ:   // object
                $this->_fetchMode = $mode;
                break;
            case Zend_Db::FETCH_BOUND: // bound to PHP variable
                /**
                 * @see Zend_Db_Adapter_Oracle_Exception
                 */
                require_once 'Zend/Db/Adapter/Oracle/Exception.php';
                throw new Zend_Db_Adapter_Oracle_Exception('FETCH_BOUND is not supported yet');
                break;
            default:
                /**
                 * @see Zend_Db_Adapter_Oracle_Exception
                 */
                require_once 'Zend/Db/Adapter/Oracle/Exception.php';
                throw new Zend_Db_Adapter_Oracle_Exception("Invalid fetch mode '$mode' specified");
                break;
        }
    }

/**
     * Adds an adapter-specific LIMIT clause to the SELECT statement.
     *
     * @param string $sql
     * @param integer $count
     * @param integer $offset OPTIONAL
     * @return string
     * @throws Zend_Db_Adapter_Oracle_Exception
     */
    public function limit($sql, $count, $offset = 0)
    {
        $count = intval($count);
        if ($count <= 0) {
            /**
             * @see Zend_Db_Adapter_Oracle_Exception
             */
            require_once 'Zend/Db/Adapter/Oracle/Exception.php';
            throw new Zend_Db_Adapter_Oracle_Exception("LIMIT argument count=$count is not valid");
        }

$offset = intval($offset);
        if ($offset < 0) {
            /**
             * @see Zend_Db_Adapter_Oracle_Exception
             */
            require_once 'Zend/Db/Adapter/Oracle/Exception.php';
            throw new Zend_Db_Adapter_Oracle_Exception("LIMIT argument offset=$offset is not valid");
        }

/**
         * Oracle does not implement the LIMIT clause as some RDBMS do.
         * We have to simulate it with subqueries and ROWNUM.
         * Unfortunately because we use the column wildcard "*",
         * this puts an extra column into the query result set.
         */
        $limit_sql = "SELECT z2.*
            FROM (
                SELECT ROWNUM AS zend_db_rownum, z1.*
                FROM (
                    " . $sql . "
                ) z1
            ) z2
            WHERE z2.zend_db_rownum BETWEEN " . ($offset+1) . " AND " . ($offset+$count);
        return $limit_sql;
    }

/**
     * @param integer $mode
     * @throws Zend_Db_Adapter_Oracle_Exception
     */
    private function _setExecuteMode($mode)
    {
        switch($mode) {
            case OCI_COMMIT_ON_SUCCESS:
            case OCI_DEFAULT:
            case OCI_DESCRIBE_ONLY:
                $this->_execute_mode = $mode;
                break;
            default:
                /**
                 * @see Zend_Db_Adapter_Oracle_Exception
                 */
                require_once 'Zend/Db/Adapter/Oracle/Exception.php';
                throw new Zend_Db_Adapter_Oracle_Exception("Invalid execution mode '$mode' specified");
                break;
        }
    }

/**
     * @return int
     */
    public function _getExecuteMode()
    {
        return $this->_execute_mode;
    }

/**
     * Inserts a table row with specified data.
     *
     * Oracle does not support anonymous ('?') binds.
     *
     * @param mixed $table The table to insert data into.
     * @param array $bind Column-value pairs.
     * @return int The number of affected rows.
     */
    public function insert($table, array $bind)
    {
        $i = 0;
        // extract and quote col names from the array keys
        $cols = array();
        $vals = array();
        foreach ($bind as $col => $val) {
            $cols[] = $this->quoteIdentifier($col, true);
            if ($val instanceof Zend_Db_Expr) {
                $vals[] = $val->__toString();
                unset($bind[$col]);
            } else {
                $vals[] = ':'.$col.$i;
                unset($bind[$col]);
                $bind[':'.$col.$i] = $val;
            }
            $i++;
        }

// build the statement
        $sql = "INSERT INTO "
             . $this->quoteIdentifier($table, true)
             . ' (' . implode(', ', $cols) . ') '
             . 'VALUES (' . implode(', ', $vals) . ')';

// execute the statement and return the number of affected rows
        $stmt = $this->query($sql, $bind);
        $result = $stmt->rowCount();
        return $result;
    }

/**
     * Updates table rows with specified data based on a WHERE clause.
     *
     * @param  mixed        $table The table to update.
     * @param  array        $bind  Column-value pairs.
     * @param  array|string $where UPDATE WHERE clause(s).
     * @return int          The number of affected rows.
     */
    public function update($table, array $bind, $where = '')
    {
        $i = 0;
        // build "col = ?" pairs for the statement
        $set = array();
        foreach ($bind as $col => $val) {
            if ($val instanceof Zend_Db_Expr) {
                $val = $val->__toString();
                unset($bind[$col]);
            } else {
                unset($bind[$col]);
                $bind[':'.$col.$i] = $val;
                $val = ':'.$col.$i;
            }
            $set[] = $this->quoteIdentifier($col, true) . ' = ' . $val;
            $i++;
        }

if (is_array($where)) {
            $where = implode(' AND ', $where);
        }

// build the statement
        $sql = "UPDATE "
             . $this->quoteIdentifier($table, true)
             . ' SET ' . implode(', ', $set)
             . (($where) ? " WHERE $where" : '');

// execute the statement and return the number of affected rows
        $stmt = $this->query($sql, $bind);
        $result = $stmt->rowCount();
        return $result;
    }

/**
     * Check if the adapter supports real SQL parameters.
     *
     * @param string $type 'positional' or 'named'
     * @return bool
     */
    public function supportsParameters($type)
    {
        switch ($type) {
            case 'named':
                return true;
            case 'positional':
            default:
                return false;
        }
    }

/**
     * Retrieve server version in PHP style
     *
     * @return string
     */
    public function getServerVersion()
    {
        $this->_connect();
        $version = oci_server_version($this->_connection);
        if ($version !== false) {
            $matches = null;
            if (preg_match('/((?:[0-9]{1,2}\.){1,3}[0-9]{1,2})/', $version, $matches)) {
                return $matches[1];
            } else {
                return null;
            }
        } else {
            return null;
        }
    }
}

Nama File / Folder	Size	Action
Db2	--	NONE
Mysqli	--	NONE
Oracle	--	NONE
Pdo	--	NONE
.DS_Store	6.004KB	Edit File Delete File Rename
Db2.php	27.309KB	Edit File Delete File Rename
Exception.php	1.457KB	Edit File Delete File Rename
Mysqli.php	17.299KB	Edit File Delete File Rename
Oracle.php	24.154KB	Edit File Delete File Rename